<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格元素学习</title>
</head>
<body>

<!--表格table
行：tr
列：td
-->

<table border="1px">
 <tr>
      <!--colspan 跨列 -->
     <td colspan="4">1.1</td>
<!--     <td>1.2</td>-->
<!--     <td>1.3</td>-->
<!--     <td>1.4</td>-->
 </tr>
    <tr>
<!--        rowspan 跨行-->
     <td rowspan="2">2.1</td>
     <td>2.2</td>
     <td>2.3</td>
     <td>2.4</td>
 </tr>
    <tr>
        <td>3.1</td>
        <td>3.2</td>
        <td>3.3</td>
<!--        <td>3.4</td>-->
    </tr>

</table>

</body>
</html>